中文摘要：

在现在的学习，经由沥滤的磷移动上的烤导致阶段变化和它的影响为高磷的铁矿石被调查了。调查结果显示在矿石的那磷与 goethite 被联系并且主要在非结晶的 Fe 存在 < 潜水艇 class= “ a-plus-plus ” > 3 PO < 潜水艇 class= “ a-plus-plus ” > 7 阶段。磷在低于 300 被烤以后留在非结晶的阶段 ???????????????? 汣獡 ???? 汰獵瀭畬 ??? ㈠ ??? ?? 琭敲瑡摥 ???? и

英文摘要：

In the present study, roasting-induced phase change and its influence on phosphorus removal via leaching has been investigated for high-phosphorus iron ore. The findings indicate that phosphorus in the ore is associated with goethite and exists mainly in amorphous Fe3PO7 phase. The phosphorus remains in the amorphous phase after being roasted below 300℃. Grattarolaite （Fe3PO7） is found in samples roasted at 600-700℃, revealing that phosphorus phase is transformed from the amorphous form to crystalline grattarolaite during roasting. Leaching tests on synthesized pure grattarolaite reveal a low rate of phosphorus removal by sulfiaric acid leaching. When the roasting tem- perature is higher than 800℃, grattarolaite is found to react with alumina to form aluminum phosphate, and the reactivity of grattarolaite with alumina increases with increasing roasting temperature. Consequently, the rate of phosphorus removal also increases with increasing roasting temperature due to the formation of acid-soluble aluminum phosphate.